Popular questions and responses by Sade
1. ## Calculus

Given ||v|| = 5 theta=30 degrees, write the vector v.

2. ## Pre-Calculus

Use a calculator to approximate two values of theta (0

3. ## Trig

Given Tan(A) = 5 in Quadrant III and Sin(B) = ⅔ in Quadrant II, find Cos(A-B).

4. ## chemistry

a sheet of gold weighing 10.0g and at a temperature of 18.0 degrees c is placed flat on a sheet of iron weighing 20.0g and a tenp. of 55.6 degrees c. what is the final temp. of the combined metals? assume that no heat is lost to the surroundings.

5. ## Trig

Given Tan(A) = 5 in Quadrant III and Sin(B) = ⅔ in Quadrant II, find Sin(A-B).

6. ## Trig

Given tan(A) = 2 and A is in Quadrant I, find tan(2A). A. -1/3 B. 2/3 C. -4/3 D. -2/3

7. ## chemistry

When 15.0 g of steam drops in temperature from 275.0 degrees c to 250.0 degrees, how much heat energy is released

8. ## Physics

A blacksmith dropped a 1.5kg iron bead at 300c into some quantity of water. If the temperature of the water from 15c to 18c, what is the mass of water assuming no heat is lost to the surrounding?(Take the specific heat of iron as 0.46jkg-1 and that of

9. ## Physics

The electronic configuration of an element X is: 1s² 2s² 2p6 3s2 3p5 Deduce the atomic number of X To what group does it belong Give two properties of the group to which the element X belong. Identify element X by name. Write a balanced equation to

10. ## Pre-Calculus

Find first differences for the sequence in order from a_1 to a_5. Determine whether or not the series is quadratic or not.(I used _ as a sign for a subscript) -1, -3, -1, 5, 15 A. 2, 2, 6, 10; not quadratic B. 2, 2, 6, 10; quadratic C. -2, 2, 6, 10; not

11. ## Math

r=4/(-2-6sinϴ) 1. What is the eccentricity of the function? 2. What is the distance between the pole and the directrix? 1. A. 2 B. -2 C. 3 D. -3 2. A. 2 B. 2/3 C. 3 D. 6

12. ## Calculus

I apologize if this question is too much to ask on this site, but I am really confused. Any help would be greatly appreciated. The famous formula shown below is called Euler’s formula, after the Swiss mathematician Leonhard Euler (1707-1783). e^(a + bi)

13. ## Calculus

A plane traveling 500 mph (called airspeed) in the direction 120 degrees encounters a wind of 80 mph in the direction of 45 degrees. What is the resultant direction of the plane (in degrees)?

14. ## Trig

Use the half-angle formula to simplify (sin4theta)/(1+cos4theta)

15. ## Trig

If angle A is 45 degrees and angle B is 60 degrees. Find sin(A)cos(B), find cos(A)sin(B), find sin(A)sin(B), and find cos(A)cos(B) The choises for the first are: A. 1/2[sin(105)+sin(345)] B. 1/2[sin(105)-sin(345)] C. 1/2[sin(345)+cos(105)] D.

16. ## Pre-Calculus

Given Sin(A) = ⅗ and Cos(B) = 8/17 in Quadrant I, find Cos(A+B).

17. ## Pre-Calculus

Define the inverse secant function by restricting the domain of the secant function to the intervals (0, pi/2) and (pi/2, pi), and sketch the inverse function’s graph.

18. ## ENGLISH

Which word is most similar to morose? sensitive silly unhappy stubborn no sure but i it might be sensitive

19. ## psy/315

I need someone to help me answer this question please. What is the five-step process for hypothesis testing, and explain the procedure and logic for each.

20. ## Chemistry

How much energy must be absorbed by 20.0 g of water to increase its temperature from 283.0 degrees c to 303.0 degrees c

21. ## Chemistry

A quantity of gas weighing 7.10g at 741 torr and 44 degrees C occupies a volume of 5.40 L. What is its molar mass?

22. ## u.s history

why was the united nation formed after war world two It looks as if what you need to do is learn how to conduct thorough and effective searches for yourself. That's what research is, and I'm sure that's what your teacher expects you to do -- conduct

23. ## Physics

When a 5kg mass is hung from a vertical spring,it streches by 25cm.(a)what mass must be supported by d spring in order to make d system vibrate wit a period of 1s.(b)if d amplitude of d motion is 5cm,determine d position nd d velocity of d mass 0.3s afta

24. ## Physics

an electric appliance takes 5A when operated on a 220V supply. Find the cost of operating the appliance for days at 2 kobo per kwh?

25. ## Calculus

Which would be the best option for finding the limit? lim (1-2x-3x^2)/1+x x->-1 A.Direct substitution B.Dividing out technique C.Rationalization technique D.Indeterminate form

26. ## Calculus

Find a quadratic model for the sequence. -4, -4, -3, -1, 2 A.y = 0.5x^2 - 0.5x - 4 B.y = 0.5x^2 - 1.5x - 3 C.y = 4.5x^2 - 21.5x+21 D.y = -4.5x^2 + 21.4x - 21

27. ## Calculus

Find the second difference for the sequence. 7, 6, 7, 10, 15, 22, …. A.1 B.2 C.3 D.5

28. ## Pre-Calculus

Given: r = 4/(-2-6sinθ) What is the distance between the pole and the directrix? A. 2 B.2/3 C.3 D.6

29. ## Calculus

Given: r = 4/(-2-6sinθ) What is the eccentricity of the function? A. 2 B. -2 C. 3 D. -3

30. ## Calculus

Given: 5cos6Θ What is the shape of the function? A. Limacon B. Rose C. Lemniscate D. Circle

31. ## Pre-Calculus

Convert to Rectangular: r*tan theta/sec theta=2 A. y=2 B. y=1/2 C. x=2 D. x=1/2

32. ## Calculus

Convert to Polar: y/x = 4 A. r = 2 B. r = 16 C. Θ = 76 D. Undefined

33. ## Calculus

convert to polar: 2xy=3 A. r=sqrt(3sin theta cos theta) B. r=sqrt[(3sin theta cos theta)/2] C. r=[3/(2sin theta cos theta)] D.This cannot be converted without ambiguity.

34. ## Calculus

find the angle between u=7i+2j and v=-4j

35. ## Calculus

What is the absolute value of: 3 - 8i? A. 9 B. 64 C. √55 D. √73

36. ## Pre-Calculus

What is the absolute value of: 3 - 8i? A. 9 B. 64 C. √55 D. √73

37. ## Pre-Calculus

Use the following vectors to answer the question. u: v: What is the projection of u onto v?

38. ## Calculus

Given the vectors u = and v = , find -½ u. A. B. C. D.

39. ## Trig

Write 3theta - sin 4theta as a product.

40. ## Trig

Given Tan(A) = 5 in Quadrant III and Sin(B) = ⅔ in Quadrant II, what is the Quadrant of A-B?

41. ## Pre-Calculus

Find two exact values of theta in degrees (0 less than or equal to theta < 360°) if cos theta = -(square root of 2)/2.

42. ## Pre-Calculus

Use a calculator to approximate two values of theta (0

43. ## psych

What is the Importance of Research in Behavioral Science?

44. ## Psy

What effect does the environment have on intellectual differences in humans?

46. ## PSY/340

I need help finding information on this question please. Discuss the importance of lifelong learning and brain stimulation to longevity and quality of life.

47. ## psy/340

I need help finding information on the topic Repetitive Transcranial Magnetic Stimulation for the Treatment of Chronic Tinnitus After Traumatic Brain Injury please. I have to discuss the deficits experienced by the individual to one or more of the five

48. ## psy/340

I need help answering this question please. Discuss the influences of biology and the environment on sexual differentiation.

49. ## psychology

I need help answering this question please. What is the relationship between genes, cells, and behavior?

50. ## PSY

I need help answering this question please. What is the relationship between genes, cells, and behavior?

51. ## PSY/340

I need help answering this question please. What is the relationship between genes, cells, and behavior?

52. ## PSY/315

I need help finding this answer please. Why is it said that hypothesis testing involves double negative logic?

53. ## math

the energy bar kyle is eating has 37 grams of carbohydrates.how many calories are from carbohydrates in the energy bar

54. ## math

find the functions f and g so that f.g=H: H(x)=sqrt x^2+3

55. ## economics

Median income in a country rises by \$5000 per year. The price of good X falls by \$4. Quantity demanded for good x falls by 15,000 units per year. What can we say with good X?

56. ## social studies

origin of man efik believe christian believe islamic believe yoruba believe igbo believe hausa believe tiv believe badagry believe

57. ## home economics

what is home economics? home economics is and education for better living,and its stufy deals with all aspects of family life.

58. ## delinquency

how dose gender affect delinquency

59. ## Justice

Differentiate between general deterrence, specific deterrence, and situational crime prevention.

60. ## u.s history

how did the u.s force japan to surrender and bring an end to the war world two The US dropped the atomic bombs on Japan, and they surrendered. Go to http://www.google.com and look up enola gay -- it'll be crystal clear!!

1. ## chemistry

X2CO3.10H2O

posted on February 10, 2020
2. ## L.A

roman is right

posted on March 16, 2019
3. ## Language Arts Check please

help....plz? is correct

posted on December 13, 2018
4. ## Language Arts

Yes, A D B is the correct order.

posted on December 13, 2018
5. ## Math

Thanks Zeriku

posted on December 12, 2018
6. ## Math

101

posted on December 4, 2018
7. ## Trig

choices*

posted on October 8, 2016
8. ## english

Which one of the following statements contains a simile? A. The maple wears a gayer scarf. B. The soaring bird quickly disappeared from our sight. C. The woods went up in flame. D. I think that I shall never see a poem lovely as a tree.

posted on May 28, 2014
9. ## math

thank you :)

posted on March 23, 2013
10. ## geometry

find uw if vw = 5/8 in

posted on August 13, 2012
11. ## Economics

Which of the following statements is true for a capitalist economy?

posted on October 4, 2011